Investigation of moisture absorption and mechanical properties of natural fibre reinforced polymer hybrid composite

Praveena, B. A.; Kumar, Sandeep; Manjunath, H. R.; Sachin, B.; Yadav, Shiv Pratap Singh; Lochan, B. Rakshith; Kumar, Gaurav; Reddy, J. Sudheer

doi:10.1016/j.matpr.2021.04.254

Cited by 18 publications

(9 citation statements)

References 15 publications

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“…Similarly, the low vacancy content of natural composites affects tensile characteristics due to improved interfacial bonding involving essential resources [35,36]. The elongation at break was previously referred to as rupture strain, and it could be determined using a tensile test [37][38][39][40][41]. The graph in Figure 3(c) shows the stress-strain diagram for a different composition.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigations on Static, Dynamic, and Morphological Characteristics of Bamboo Fiber-Reinforced Polyester Composites

Santhosh

Praveena²,

Srikanth³

et al. 2022

International Journal of Polymer Science

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The use of natural fiber-reinforced polymer composites has increased over a period of time, majorly due to the ecosustainability and biodegradability of the composites. Among several grades of natural fibers, bamboo fibers offer numerous environmental and cost benefits and possess excellent mechanical characteristics. The superior properties of the bamboo fibers have triggered the research interests in the domain of bamboo fiber-reinforced polymer composites. Among the polymers, polyesters are long chain molecules made up of atoms arranged in various ways with other elements to form the basic building blocks of a polymeric chain. Polyester is being increasingly employed in today’s industrial products due to its inherent advantages. As a result, based on the potential properties of bamboo fibers as reinforcing materials and polyester resin as matrix material, the biocomposites are synthesized by hand lay-up technique and the specimens cut as per the standard dimensions and subjected to mechanical investigations, vibration, and morphological characterization as per the ASTM test methods. The increase in fiber weight content has enhanced flexural, tensile, and impact characteristics and improved the damping characteristics of the composite specimens. The microstructural evaluations have revealed the uniform distribution of the bamboo fibers in the resin, and the morphological studies of the fractured specimens have revealed that the fracture is majorly due to the matrix cracks rather than the fiber debonding, which is a major attribute ascertaining the strong coherent strengthening mechanism brought about by the inclusion of bamboo fiber in the polyester resin.

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Section: Resultsmentioning

confidence: 99%

Experimental Investigations on Static, Dynamic, and Morphological Characteristics of Bamboo Fiber-Reinforced Polyester Composites

Santhosh

Praveena²,

Srikanth³

et al. 2022

International Journal of Polymer Science

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“…Surface bonding between the fiber and the polymer has a great impact on the performance of the composites. [ 23 ]…”

Section: Methodsmentioning

confidence: 99%

Investigation of tensile and flexural properties of habesha moringa‐bamboo fiber reinforced epoxy hybrid composite

et al. 2023

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In the present investigation, moringa oleifera and bamboo fibers extracted from Ethiopia are studied to understand their mechanical properties. Three types of woven composites namely moringa/epoxy, bamboo/epoxy and moringa/bamboo/epoxy (hybrid) are fabricated by maintaining 60 vol% fiber content. Additionally, neat epoxy samples are prepared for comparison. Tensile and flexural properties are investigated in terms of strength and modulus. Tensile test results depict brittle failure for all composites and infer increase in fracture strain of woven composites as compared with neat epoxy. Tensile modulus and strength of woven composites increase in the range of 19%–39% and 18%–281%, respectively as compared with neat ones. Flexural stress–strain profiles of neat epoxy, moringa/epoxy and moringa/bamboo/epoxy composites linear curves until failure indicating brittle mode while bamboo/epoxy composites shows non‐linear stress–strain profiles revealing non‐brittle mode of failure. Flexural properties exhibited by bamboo/epoxy and moringa/bamboo/epoxy reveal comparable properties to each other yet superior than moringa/epoxy and neat epoxy composites mainly attributed to the good bonding of constituents and compatibility. All the woven composites reveal an increase in flexural modulus and strength and are in the range of 31%–96% and 5.79%–51.12%, higher than the neat epoxy. Finally, fractured surfaces of specimens are analyzed using scanning electron microscope to understand the structure property correlations.

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“…This phenomenon can be ascribed to the hybridization effect, where both types of fibers contribute to increasing the composite's strength. 61 However, Sawpan et al reported the stress concentration of hemp fibers reduced the tensile properties of the composite material. They found an initial decline in tensile strength at 20 wt% fiber contents, but then it increased as the fiber content increased from 20 to 50 wt%.…”

Section: Tensile Propertiesmentioning

confidence: 99%

Experimental investigation of mechanical properties of jute/hemp fibers reinforced hybrid polyester composites

Islam,

Sabir,

Syduzzaman

2024

SPE Polymers

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One of the primary drawbacks associated with natural fiber reinforced composites is their relatively poor mechanical properties. One potential approach to overcome this challenge is to augment the fiber loading, thereby improving the interfacial characteristics and hybridization. In this study, hybrid polyester composite structures reinforced with jute/hemp fibers were fabricated via the hand layup process, with fiber loadings varying between 30%, 50%, and 70% by volume. Fibers were subjected to alkali solutions (NaOH) containing 3% and 5% alkali in advance of the composites' formation. The impact, flexural, and tensile characteristics of hybrid jute/hemp reinforced polyester composites were investigated via laboratory studies. The composite materials that underwent testing with a 50 vol% fiber loading and 3% NaOH exhibited the maximum tensile strength (26.6 MPa), tensile modulus (733.56 MPa), flexural strength (62.7 MPa), and flexural modulus (3.04 GPa).Highlights Hybrid polyester composite structures reinforced with jute/hemp fibers were fabricated. Hand layup method used with various fiber loadings (30%, 50%, and 70% by volume). Highest mechanical properties were obtained for 3% NaOH treatment and 50% fiber loading.

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Investigation of moisture absorption and mechanical properties of natural fibre reinforced polymer hybrid composite

Cited by 18 publications

References 15 publications

Experimental Investigations on Static, Dynamic, and Morphological Characteristics of Bamboo Fiber-Reinforced Polyester Composites

Experimental Investigations on Static, Dynamic, and Morphological Characteristics of Bamboo Fiber-Reinforced Polyester Composites

Investigation of tensile and flexural properties of habesha moringa‐bamboo fiber reinforced epoxy hybrid composite

Experimental investigation of mechanical properties of jute/hemp fibers reinforced hybrid polyester composites

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